/Engine/Source/Runtime/Core/Public/Internationalization/ITextFormatArgumentModifier.h
Utility helper to parse out a list of key->value pair arguments. The keys are assumed to only contain valid identifier characters, and the values may be optionally quoted (parsed strings are sub-string references to within the source args string)
static bool ParseKeyValueArgs ( const [FTextFormatString](API\Runtime\Core\Internationalization\FTextFormatString) & InArgsString, [TSortedMap](API\Runtime\Core\Containers\TSortedMap)< [FTextFormatString](API\Runtime\Core\Internationalization\FTextFormatString), [FTextFormatString](API\Runtime\Core\Internationalization\FTextFormatString) > & OutArgKeyValues, const TCHAR InValueSeparator, const TCHAR InArgSeparator )